At 1 a.m., the woman was walking in the 1900 block of North Keystone Avenue when a man came up to her, took out a knife and threatened to assault her, according to a Chicago Police community alert. The man threw the woman to the ground, kicked her, punched her and cut her arm with his knife.

The man then ran off, police said. The woman had small cuts.

The man was 34-45 years old, 5-foot-6 to 5-foot-8, 150-170 pounds with an afro, police said. He wore black clothing and black combat boots.

People should walk in pairs, be aware of their surroundings and call 911 to report suspicious people and activity, police said.

Anyone with information about the attack was asked to call police at 312-746-6554.

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